To examine or look at something to verify its condition or status. I need to check out the new restaurant in town.
To borrow an item, especially a book, from a library. She went to the library to check out a few books for her research.
To leave a hotel after paying the bill. We need to check out of the hotel by noon.
To investigate or explore something. You should check out that new band; their music is amazing.
To look at someone or something with interest. He couldn't help but check out the new car parked outside.